webapp deploy to PC: ERROR: Invalid BROADCAST address

   - [canvasback] err: /Stage[main]/Shorewall::Base/Service[shorewall]/ensure: change from stopped to running failed: Could not start Service[shorewall]: Execution of '/etc/init.d/shorewall start' returned 1:  at /srv/leap/puppet/modules/shorewall/manifests/base.pp:35

after ssh'ing in and doing a shorewall safe-start I get this:

root@canvasback:~# shorewall safe-start
Compiling...
Processing /etc/shorewall/puppet/params ...
Processing /etc/shorewall/shorewall.conf...
Loading Modules...
Compiling /etc/shorewall/puppet/zones...
Compiling /etc/shorewall/puppet/interfaces...
   ERROR: Invalid BROADCAST address /etc/shorewall/puppet/interfaces (line 11)
root@canvasback:~# cat /etc/shorewall/puppet/interfaces 
#
# Shorewall version 3.4 - Interfaces File
#
# For information about entries in this file, type "man shorewall-interfaces"
#
# For additional information, see
# http://shorewall.net/Documentation.htm#Interfaces
#
###############################################################################
#ZONE   INTERFACE       BROADCAST       OPTIONS
net  detect tcpflags,blacklist,nosmurfs,norfc1918
#LAST LINE -- ADD YOUR ENTRIES BEFORE THIS ONE -- DO NOT REMOVE

(from redmine: created on 2013-04-12, closed on 2013-04-30, relates #2399 (closed))